Definitions

1. noun

A unit of radioactivity, equivalent to 37 trillion (3.7 × 10^13) disintegrations per second of a radioactive substance.

“The radiation level measured 100 microcuries per liter of water.”

2. noun

A unit of measurement for radioactivity, often used to express the activity of a sample.

“The experiment required handling radioactive samples with activities measured in microcuries.”